| 摘要 |
<p>This RFID tag (101) is provided with a substrate sheet (10), antenna coils (11, 12), a first magnetic body sheet (21), a second magnetic body sheet (22), and a third magnetic body sheet (23). The first magnetic body sheet (21) and the second magnetic body sheet (22) are disposed on the second primary surface side of the substrate sheet (10). The third magnetic body sheet (23) is disposed on the first primary surface side of the substrate sheet (10). When the magnetic flux of a reader/writer antenna enters the third magnetic body sheet (23) from a right-inclined direction or from the right side section, the magnetic flux interlinks with the antenna coils (11, 12) by passing through the first magnetic body sheet (21). As a result, even when pasted to the surface of a metal article, magnetic flux attempting to enter the metal is shielded, suppressing the generation of eddy currents, and furthermore, magnetic flux from the side surface direction also can contribute to the electromotive force of antenna coils.</p> |
